I noticed that some other membership plugins are able to add new user groups within the WP users dashboard. However, PMP does not. Please tell me why not?

I want to create some tables which has performance scores for each team member. There are team member ranks (not subscriptions names). Example: Captain / Sergent / Private.

I guess I can create subscription levels than manually move then in. However, PMP does not create user groups and they therefore will not be a variable I can declare in my final output. Example: username /rank.

I do not see the PMP membership levels as a role which was my point. I do see however another membership plugin roles which can be managed by the Role Editor. This function is key to what I am developing.